Wireless Earbuds / Bose
Bose QuietComfort Ultra Earbuds (2nd Gen)
The best noise cancelling in any earbud — at the cost of battery life.
Overall score 7.9/10
Pros
- + Best noise cancelling available in an earbud, comfortably ahead of Apple and Sony
- + CustomTune ear-canal calibration meaningfully improves both ANC and sound
- + Nine fit combinations means almost anyone can get a seal
- + Wireless charging finally built into the case rather than a separate cover
Cons
- − Worst battery in the premium tier — 6 hours, dropping to just 4 with Immersive Audio on
- − Only IPX4, with no dust protection at $299
- − Heaviest buds here at over 7g each
- − Bose publishes neither driver size nor codec support
Bose QuietComfort Ultra Earbuds (2nd Gen) review: what the specs say
The best noise cancelling in any earbud — at the cost of battery life. At $299, Bose's 2025 model sits at the premium end of the category — the wireless Earbuds we compare run from $99 to $329.99. It scores 7.9/10 overall, calculated from published specifications across 8 categories rather than from a subjective impression.
Its strongest showing is Noise Cancelling at 9.8/10 — how much ambient noise is actually removed. The weakest is Battery at 6.0/10, which is the trade-off to weigh before buying: if that is the specification you care about most, one of the alternatives below will serve you better.
Worth knowing before you buy: worst battery in the premium tier — 6 hours, dropping to just 4 with Immersive Audio on; and only IPX4, with no dust protection at $299. Every specification on this page comes from Bose's own documentation or a verified retail listing — where a figure is not published, the table says so rather than estimating it.
Specifications and price last verified . Report an error
Full Specifications
| Battery (ANC on) | 6 hrs |
| Battery with Case | 24 hrs |
| Active Noise Cancelling | Bose adjustable ANC with CustomTune ear-canal calibration; Quiet, Aware and Immersion modes |
| Driver Size | Not published by the manufacturer mm |
| Bluetooth | 5.3 |
| Multipoint | Yes |
| Water Resistance | IPX4 |
| Wireless Charging | Yes |
| Weight per Bud | 7.26 g |
| Codecs | Bose lists Bluetooth profiles only; aptX Adaptive was on the first generation but is unconfirmed here |
| Spatial Audio | Yes — Bose Immersive Audio with Still and Motion head-tracked modes, plus a new Cinema Mode |
| App EQ | Yes |
| Connectivity | Bluetooth 5.3, USB-C, Qi wireless charging |
| Material | Plastic with silicone tips and stability bands |
| Warranty | 12 months |
Compare Bose QuietComfort Ultra Earbuds (2nd Gen) With
Cheaper Alternative
Samsung Galaxy Buds4 Pro — $249.99
Premium Alternative
Sennheiser MOMENTUM True Wireless 4 — $299.95